Behind an unassuming sandstone entrance on one of Mosman's premier streets is a hidden luxury estate offering all the amenities of a private resort.

Australia Day in Mosman saw 120 locals gather to watch 34 residents from 18 different countries become new citizens of the nation.

A waterfront penthouse bigger than the average Mosman house is attracting plenty of interest after its launch on the property market last week.

The proposed plan by Mexican fast-food chain Guzman y Gomez to operate a 24-hour restaurant in Mosman has been met with strong opposition from residents.

Mosman's Daisy Thomas has won Australia’s first-ever Winter Youth Olympic medal in Big Air, claiming silver at the Winter Youth Olympic Games in South Korea.

Marine experts have advised swimmers to avoid early morning and dusk dips in Sydney Harbour following a shocking shark attack on an eastern suburbs woman.